It sounds like the stuff of science fiction, but it actually comes from a lab in Maryland.
In 2018, Liangbing Hu, a materials scientist at the University of Maryland, had devised a way to turn ordinary wood into a material stronger than steel. It seemed like yet another headline grabbing discovery that wouldn’t make it out of the lab.
“All these people came to him,” said Alex Lau, CEO of InventWood, “He’s like, OK, this is amazing, but I’m a university professor. I don’t know quite what to do about it.”
Rather than give up, Hu spent the next few years refining the technology, reducing the time it took to make the material from more than a week to a few hours. Soon, it was ready to commercialize, and he licensed the technology to InventWood.
Now, the startup’s first batches of Superwood will be produced starting this summer.
“Right now, coming out of the this first-of-a-kind commercial plant — so it’s a smaller plant — we’re focused on skin applications,” Lau said. “Eventually we want to get to the bones of the building. Ninety percent of the carbon impact from buildings is concrete and steel in the construction of the building.”
To build the factory, InventWood has raised $15 million in the first close of a Series A round. The round was led by the Grantham Foundation with participation from Baruch Future Ventures, Builders VC, and Muus Climate Partners, the company exclusively told TechCrunch.
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InventWood’s Superwood product starts with regular timber, which is mostly composed of two compounds, cellulose and lignin. The goal is to strengthen the cellulose already present in the wood. “The cellulose nanocrystal is actually stronger than a carbon fiber,” Lau said.
The company treats it with “food industry” chemicals to modify the lignin in the …